Naslov
Total polyphenol content and antioxidant activity of wild and cultivated asparagus in Croatia

Autori
Palfi, Marina ; Jurković, Zorica ; Ćosić, Jasenka ; Tomić-Obrdalj, Helena ; Jurković, Vlatka ; Knežević, Nada ; Vrandečić, Karolina

Izvornik
Poljoprivreda (Osijek) (1330-7142) 23 (2017), 1; 56-62

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Asparagus acutifolius L., Asparagus officinalis L., DPPH, total polyphe- nol, antioxidant activity.

Sažetak
Asparagus is an interesting vegetable as a part of a healthy diet and has been widely studied due to the high nutritional value and potential positive effects on human health. Wild asparagus (Asparagus acutifolius L.) grows along the Adriatic coast and islands, while the cultivated asparagus (A. officinalis L.) is mostly grown in the eastern region of Croatia. The aim of this study was to determine total polyphe- nol content (measured spectrophotometrically) and antioxidant activity (DPPH) in wild and cultivated asparagus. No significant differences in total polyphenol content were found between wild and cultivated asparagus. The highest content of polyphenols in wild asparagus was 6.20 [mg GAE/g fresh weight] and 49.60 [mg GAE/g dry weight], and in cultivated asparagus it was 4.52 [mg GAE/g fresh weight] and 50.93 [mg GAE/g dry weight]. Antioxidant activity measured using DPPH (2, 2-diphenyl-1- picrylhydrazyl) method showed statistically significant difference. Higher antioxidant activity was measu- red in cultivated than in wild asparagus. The results also indicate that increased polyphenol content leads to higher antioxidant activity, but more so in the culti- vated asparagus. Based on the results, the cultivated asparagus is an excellent alternative to wild asparagus that should be protected from over-harvesting, thus preventing devastation of plant diversity of islands and coast.

Izvorni jezik
Hrvatski, engleski

Znanstvena područja
Poljoprivreda (agronomija), Prehrambena tehnologija

POVEZANOST RADA